kses uses deprecated (PHP 5.3.0) split

[duck_]

wp-includes/kses.php line 1407, part of safecss_filter_attr.

​split is deprecated in PHP as of 5.3.0, we should probably replace with explode here.

Actually used in approximately 20 places overall (probably should have checked this first).

fix deprecated split() in other files

I didn't replace split() in 3 places:

• atomlib
• rss (magpieRSS)
• phpmailer

These are external packages. They probably have upstream changes already.

I also checked each instances whether to use explode() or preg_split(). Seems like all of them can be explode(), but we should be careful if there's any additional replacement we need to make.

magpieRSS is dead upstream and deprecated here, so not touching it is fine.

atomlib.php looks dead upstream as well -- DOA in fact. Only change other than whitespace and docs is actually downstream (r4892). We should probably take ownership of it again formally, considering it was originally a contribution to WordPress, rather than an external package we brought in. I'm also noting that it is licensed under Apache upstream, but was originally contributed to WordPress as GPL. (Not sure why it was even treated as an external library due to the way it was contributed.)

Reference: ​http://code.google.com/p/phpatomlib/source/browse/trunk/lib/atomlib.php

phpmailer, I believe there exists a PHP5 version upstream, so we should update to that for 3.2.

Replying to garyc40:

I also checked each instances whether to use explode() or preg_split(). Seems like all of them can be explode(), but we should be careful if there's any additional replacement we need to make.

Yeah that's why I didn't rush into it last night. I imagine explode will be fine in these cases, but do need to make sure.

I wouldn't worry about atomlib we will like stop using it soon - ​https://core.trac.wordpress.org/attachment/ticket/7652/7652-wpapp-done.diff

As a quick note, these are different:

list($domain, $video_id) = split(".com/", $url);
list($domain, $video_id) = explode(".com/", $url);

Technically in split (being a POSIX Regex) the . is a single-character wildcard. I actually think that the way explode works is what was intended for this particular bit of code, but I thought I'd point it out.

+1

I would highly appreciate seeing this fixed in 3.3, this bug is open for 10 months and unchanged, with patches available that do not change functionality or break b/c so it should not be of any problems.

replace split() in wp-includes/rss.php, all other occurences seem to be coverd in the previous attachments

In [19726]:

split was deprecated in PHP 5.3.0, so use explode instead. Props garyc40. Fixes #16325.

Replying to j_schumann:

replace split() in wp-includes/rss.php, all other occurences seem to be coverd in the previous attachments

See nacin's comment above for why it wasn't removed from wp-includes/rss.php.